ssme world leaders are expected to walk out in protest when mahmoud ahmadinejad speaks. 3 with his final termmwinding down... this will likely bee speech as iraniannpresident. and he's in tte spotlight even before taking hh ppdium. president obama told the general aasembly on tuesday phat iran has failed, time and pgain, tt demonstrate its nuclear rograa is peaceful - and meet its u-n obligations. america wwnts to resolve this through diplomaay and we believe there is still ttme and space to do so. but that contained. on the campaign ke n& trail, republican riial mitt romney rail, republican on thh campaign that can be trail, repubbican rival mitt romney said the president'' approach o iran has not &pworked. words are words. you neee to show the kind of we'rr saying. former president bill clinton told cnnns pierr morgan tonight" he doesn't bblievv iran's nuclear program is only ffr peaceffl purposes, off cam: do you truut ahmadinejadd clinttn: notton intervvew that aireddeaalier this week, ahmadinejad reflected on his upcoming speech. i aveebeen coming o the united natioos general assemb